Composition structure of explosion-proof master controller

Abstract

The utility model relates to a composition structure of an explosion-proof master controller. The technical problem that an existing explosion-proof master is poor in explosion-proof effect is solved. Comprising a control shell with a mounting cavity, one side of the control shell is provided with an open end communicated with the mounting cavity, a cover body capable of sealing the open end is arranged on the control shell, a control bottom plate is arranged in the mounting cavity, and the control bottom plate is fixedly arranged on the control shell through a bottom plate fixing assembly. The control bottom plate is provided with a control assembly through a control positioning assembly, the cover body is provided with a button protection assembly corresponding to the control assembly, one side of the control shell is provided with an anti-explosion access device communicated with the mounting cavity, and one side of the anti-explosion access device is provided with a grounding assembly arranged in the mounting cavity. The explosion-proof switch has the advantages that the sealing effect can be improved through the explosion-proof access device and the grounding assembly, the electric leakage phenomenon can be prevented, and the explosion-proof effect is ensured. The connecting and sealing effect between the control shell and the cover body can be guaranteed through the inserting assembly and the fixing assembly, and the explosion risk is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of explosion-proof equipment technology, specifically relating to the composition structure of an explosion-proof master controller. Background Technology

[0002] Explosion-proof master controllers are used as control devices in flammable and explosive hazardous locations. They convert manual operation or sensor signals into electrical signals to drive electrical appliances or motors to perform pre-programmed actions remotely. They are widely used in industrial automation equipment and conventional equipment. However, with the development of science and technology, the explosion-proof master controllers currently in use no longer meet the current requirements for explosion protection and safety due to their low housing strength, poor anti-static properties, weak resistance to light aging, and weak dustproof, waterproof, and corrosion-resistant capabilities. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems by providing a structural composition of an explosion-proof master controller.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: A structure for an explosion-proof master controller includes a control housing with a mounting cavity. One side of the control housing has an open end communicating with the mounting cavity, and the control housing is provided with a cover capable of closing the open end. A control base plate is located inside the mounting cavity. The control base plate is fixedly mounted on the control housing by a base plate fixing assembly, and a control component is mounted on the control base plate via a control positioning assembly. The cover is provided with button protection components corresponding to the control components. One side of the control housing is provided with an explosion-proof access device communicating with the mounting cavity. One side of the explosion-proof access device is provided with a grounding assembly located inside the mounting cavity. The open end facilitates the placement of the control base plate and control components within the mounting cavity. The grounding assembly eliminates static electricity and conducts current to the ground, effectively preventing leakage and explosion. The explosion-proof access device improves the sealing effect, preventing external flammable and explosive gases and dust from entering the control housing and reducing the risk of explosion.

[0005] In the aforementioned structure of an explosion-proof master controller, the explosion-proof access device includes an access hole located on one side of the control housing. A hollow screw is provided inside the access hole, and the hollow screw is fixedly connected to the access hole by threads. One end of the hollow screw extends into the mounting cavity, and both sides of the access hole have sealing rings fitted around the circumferential outer side of the hollow screw. The access hole facilitates the sealing of the hollow screw, and the sealing rings improve the sealing effect between the hollow screw and the access hole, thereby reducing the risk of explosion.

[0006] In the aforementioned structure of an explosion-proof master controller, the hollow screw has an access nut on its outer circumferential side that abuts against the sealing ring, and the end of the hollow screw away from the access hole is provided with a plug rod that can seal the hollow screw via a sealing ring. Alternatively, the hollow screw contains an explosion-proof cable that extends into the mounting cavity and is connected to the control base plate. The explosion-proof cable can be connected to the control base plate in the mounting cavity via the hollow screw. The access nut ensures the connection stability of the hollow screw, the plug rod seals the hollow screw, ensuring the sealing effect of the mounting cavity, and the sealing ring further improves the sealing effect.

[0007] In the above-mentioned structure of an explosion-proof master controller, the grounding component includes a grounding bolt disposed in the mounting cavity. The grounding bolt is disposed on one side of the access hole and is fixedly connected to the control housing by a grounding nut. The grounding bolt and the grounding nut facilitate grounding of the wires, thereby improving the explosion-proof effect.

[0008] In the above-mentioned structure of an explosion-proof master controller, the base plate fixing assembly includes several mounting columns disposed in the mounting cavity. The control base plate abuts against the mounting columns, and the control base plate is provided with several fixing screws connected to the mounting columns. The control positioning assembly is disposed on the side of the control base plate away from the mounting columns. The mounting columns facilitate the support and abutment of the control base plate, and the fixing screws facilitate the fixing of the control base plate in the mounting cavity via the mounting columns, thus ensuring the installation stability between the control base plate and the control housing.

[0009] In the above-mentioned structure of an explosion-proof master controller, the control positioning component includes several placement slots on the control base plate. Adjacent placement slots are equidistant from each other, and the control components are respectively placed in the placement slots. The placement slots facilitate the positioning and placement of the control components and isolate them from each other, thereby improving installation efficiency.

[0010] In the aforementioned structure of an explosion-proof master controller, the control components include an explosion-proof indicator light, control buttons, and a control switch. The explosion-proof indicator light and control buttons are both housed in a placement slot, while the control switch is housed in the placement slot via a control base. The explosion-proof indicator light displays the operating status of the explosion-proof master controller, providing a safety warning to the user and improving operational safety. The control buttons facilitate user control of the explosion-proof master controller and enable emergency control operations, further enhancing equipment safety. The control base connects to the control base plate, providing a stable electrical connection for the control switch, reducing external wiring, system complexity, and failure rate. Furthermore, the control base provides overvoltage protection, overcurrent protection, and anti-static protection for the control switch, extending its service life.

[0011] In the aforementioned structure of an explosion-proof master controller, the button protection assembly includes an indicator light housing, a button housing, and a switch housing. All three housings are housed within button mounting holes in the cover. The indicator light housing corresponds to the explosion-proof indicator light, the button housing corresponds to the control button, and the switch housing corresponds to the control switch. The button mounting holes facilitate the positioning and placement of the indicator light housing, button housing, and switch housing, improving installation efficiency and ensuring the correspondence between the indicator light housing and the explosion-proof indicator light, the button housing and the control button, and the switch housing and the control switch. The indicator light housing, button housing, and switch housing also allow users to easily control the device through the mounting cavity, enhancing safety.

[0012] In the aforementioned structure of an explosion-proof master controller, the cover and the control housing are connected by a plug-in assembly. Both the control housing and the cover are made of glass fiber unsaturated polyester resin. The four corners of the cover are fixedly connected to the control housing by fixing assemblies. The plug-in assembly includes a snap-fit ​​ring extending inward from the open end of the control housing. One side of the snap-fit ​​ring has a snap-fit ​​protrusion extending towards the cover. The snap-fit ​​protrusions are respectively located at both ends of the control housing. The cover has a snap-fit ​​groove extending inward from the control housing. The snap-fit ​​groove corresponds to the snap-fit ​​protrusion, and the snap-fit ​​protrusion is located within the snap-fit ​​groove. The side of the cover abuts against the snap-fit ​​ring. The snap-fit ​​ring and the snap-fit ​​protrusion facilitate snap-fitting of the snap-fit ​​groove. A snap-fit ​​sealing ring is provided within the snap-fit ​​groove to ensure a sealing effect at the connection between the control housing and the cover.

[0013] In the above-mentioned structure of an explosion-proof master controller, the fixing component includes fixing holes respectively set at the four corners of the control housing, and the cover is provided with positioning holes that correspond one-to-one with the fixing holes. The positioning holes are provided with fixing bolts with one end extending into the fixing holes. The cover and the control housing are fixedly connected by fixing bolts. The positioning holes facilitate the quick placement of fixing bolts, and the fixing holes and fixing bolts ensure the connection effect between the control housing and the cover.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] 1. The explosion-proof access device and grounding components can improve the sealing effect and prevent leakage, thus ensuring the explosion-proof effect.

[0016] 2. The plug-in and fixing components ensure a tight seal between the control housing and the cover, further reducing the risk of explosion.

[0017] 3. The button protection component allows for control of the components inside the mounting cavity via the cover, ensuring a tight seal. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a structural cross-sectional view of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the control housing in this utility model.

[0021] Figure 4 This is a structural cross-sectional view of the control housing in this utility model.

[0022] Figure 5 This is a structural cross-sectional view of the control and positioning component in this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the cover body in this utility model.

[0024] Figure 7 This is a cross-sectional view of the cover body in this utility model.

[0025] In the diagram: 1. Control housing; 11. Mounting cavity; 12. Open end; 13. Control base plate; 2. Cover; 3. Base plate fixing assembly; 3. Mounting post; 31. Fixing screw; 32. Control positioning assembly; 4. Placement slot; 41. Control assembly; 5. Explosion-proof indicator light; 51. Control button; 52. Control switch; 53. Control base; 54. Button protection assembly; 6. Signal light housing; 61. Button housing; 62. Switch housing; 63. Button mounting hole; 64. Explosion-proof access device; 7. Access hole; 71. Hollow screw; 72. Sealing ring; 73. Access nut; 74. Sealing ring; 75. Plug; 76. Grounding assembly; 8. Grounding bolt; 81. Grounding nut; 82. Plug-in assembly; 9. Snap-in ring; 91. Snap-in protrusion; 92. Snap-in groove; 93. Fixing assembly; 10. Fixing hole; 101. Positioning hole; 102. Fixing bolt; 103. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the structure of this explosion-proof master controller includes a control housing 1 with a mounting cavity 11. The control housing 1 is rectangular, and one side of the control housing 1 has an open end 12 that communicates with the mounting cavity 11. The control housing 1 is provided with a cover 2 that can close the open end 12. The mounting cavity 11 contains a control base plate 13, which is fixedly mounted on the control housing 1 by a base plate fixing assembly 3. The control base plate 13 is provided with a control assembly 5 mounted by a control positioning assembly 4. The cover 2 is provided with a button protection assembly 6 that corresponds to the control assembly 5. The buttons can be operated through the cover 2, reducing the risk of explosion. One side of the control housing 1 is equipped with an explosion-proof access device 7 that communicates with the mounting cavity 11. The explosion-proof access device 7 has a grounding component 8 installed in the mounting cavity 11. The control base plate 13 and control component 5 can be easily installed in the mounting cavity 11 through the open end 12. The grounding component 8 can eliminate static electricity and conduct current to the ground, which can effectively prevent leakage and explosion. The explosion-proof access device 7 can improve the sealing effect and prevent flammable and explosive gases and dust from entering the control housing 1, reducing the risk of explosion.

[0028] Specifically, the explosion-proof access device 7 includes an access hole 71 located on one side of the control housing 1. A hollow screw 72 is provided in the access hole 71. The hollow screw 72 is fixedly connected to the access hole 71 by threads, and one end of the hollow screw 72 extends into the mounting cavity 11. Both sides of the access hole 71 have sealing rings 73 sleeved on the outer side of the hollow screw 72. The access hole 71 can easily prevent the hollow screw 72 from being exposed, and the sealing rings 73 can improve the sealing effect between the hollow screw 72 and the access hole 71, reducing the risk of explosion.

[0029] The hollow screw 72 has an access nut 74 that abuts against the sealing ring 73 on its outer circumference. The end of the hollow screw 72 away from the access hole 71 is provided with a plug 76 through a sealing ring 75 to seal the hollow screw 72. Alternatively, the hollow screw 72 has an explosion-proof cable that extends into the mounting cavity 11 and is connected to the control base plate 13. The explosion-proof cable can be connected to the control base plate 13 in the mounting cavity 11 through the hollow screw 72. The access nut 74 can ensure the connection stability of the hollow screw 72. The plug 76 can seal the hollow screw 72 to ensure the sealing effect of the mounting cavity 11. The sealing ring 75 can further improve the sealing effect.

[0030] like Figure 2 , Figure 4 , Figure 5 As shown, the grounding assembly 8 includes a grounding bolt 81 disposed in the mounting cavity 11. The grounding bolt 81 is disposed on one side of the access hole 71, and the grounding bolt 81 is fixedly connected to the control housing 1 through the grounding nut 82. The grounding bolt 81 and the grounding nut 82 facilitate the grounding of the wire, thereby improving the explosion-proof effect.

[0031] Furthermore, the base plate fixing assembly 3 includes several mounting posts 31 disposed in the mounting cavity 11. The control base plate 13 is abutted against the mounting posts 31, and the control base plate 13 is provided with several fixing screws 32 connected to the mounting posts 31. The control positioning assembly 4 is disposed on the side of the control base plate 13 away from the mounting posts 31. The mounting posts 31 facilitate the support and abutment of the control base plate 13, and the fixing screws 32 facilitate the fixing of the control base plate 13 in the mounting cavity 11 via the mounting posts 31, and ensure the installation stability between the control base plate 13 and the control housing 1.

[0032] The control positioning component 4 includes several placement slots 41 set on the control base plate 13. Adjacent placement slots 41 are equidistant from each other. Control components 5 are respectively set in the placement slots 41. The placement slots 41 facilitate the positioning and placement of the control components 5 and isolate them from each other, thereby improving installation efficiency.

[0033] Combination Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 As shown, the control component 5 includes an explosion-proof indicator light 51, a control button 52, and a control switch 53. The explosion-proof indicator light 51 and the control button 52 are both located in the placement slot 41. The control switch 53 is located in the placement slot 41 via a control base 54. The explosion-proof indicator light 51 can display the working status of the explosion-proof master controller, which can serve as a safety warning to the user and improve the safety of use. The control button 52 allows the user to easily control the explosion-proof master controller and can perform emergency control operations, further improving the safety of equipment use. The control base 54 is connected to the control base plate 13, which can provide a stable electrical connection for the control switch 53, reduce external wiring, reduce system complexity and failure rate, and provide overvoltage protection, overcurrent protection, and anti-static protection for the control switch 53, thereby improving the service life of the control switch 53.

[0034] The button protection assembly 6 includes a signal light housing 61, a button housing 62, and a switch housing 63. All three housings are housed within the button mounting holes 64 of the cover 2. The signal light housing 61 corresponds to the explosion-proof indicator light 51, the button housing 62 corresponds to the control button 52, and the switch housing 63 corresponds to the control switch 53. The button mounting holes 64 facilitate the positioning and placement of the signal light housing 61, button housing 62, and switch housing 63, improving installation efficiency and ensuring the correspondence between the signal light housing 61 and the explosion-proof indicator light 51, the button housing 62 and the control button 52, and the switch housing 63 and the control switch 53. The signal light housing 61, button housing 62, and switch housing 63 allow users to easily control the device through the mounting cavity 11, enhancing safety.

[0035] Specifically, the cover 2 and the control housing 1 are connected by a plug-in assembly 9. Both the control housing 1 and the cover 2 are made of glass fiber unsaturated polyester resin. Glass fiber unsaturated polyester resin can provide antistatic, anti-light aging, and impact resistance, further improving the explosion-proof effect. The four corners of the cover 2 are fixedly connected to the control housing 1 by fixing assemblies 10. The plug-in assembly 9 includes a snap ring 91 that is provided on the side of the control housing 1 with the open end 12 and extends inward. One side of the snap ring 91 is provided with a snap protrusion extending toward the cover 2. Block 92 and snap-fit ​​protrusion 92 are respectively provided at both ends of the control housing 1. The cover 2 extends inward toward the control housing 1 and is provided with snap-fit ​​groove 93. The snap-fit ​​groove 93 is correspondingly provided with the snap-fit ​​protrusion 92, and the snap-fit ​​protrusion 92 is provided in the snap-fit ​​groove 93. The side of the cover 2 abuts against the snap-fit ​​ring 91. The snap-fit ​​ring 91 and the snap-fit ​​protrusion 92 facilitate the snap-fit ​​setting of the snap-fit ​​groove 93. The snap-fit ​​sealing ring is provided in the snap-fit ​​groove 93, which can ensure the sealing effect between the control housing 1 and the cover 2.

[0036] Combination Figure 1 , Figure 3 , Figure 6 As shown, the fixing component 10 includes fixing holes 101 respectively disposed at the four corners of the control housing 1. The cover 2 is provided with positioning holes 102 that correspond one-to-one with the fixing holes 101. The positioning holes 102 are provided with fixing bolts 103 extending into the fixing holes 101. The cover 2 and the control housing 1 are fixedly connected by the fixing bolts 103. The positioning holes 102 facilitate the quick placement of the fixing bolts 103, and the fixing holes 101 and fixing bolts 103 ensure the connection effect between the control housing 1 and the cover 2.

[0037] The principle of this embodiment is as follows: the open end 12 facilitates the placement of the control base plate 13 and the control component 5 within the mounting cavity 11, and the control housing 1 and the cover 2 are connected and sealed with the fixing component 10 via the plug-in component 9, improving the sealing effect within the mounting cavity 11. The explosion-proof cable is placed within the mounting cavity 11 through the access hole 71, and the explosion-proof access device 7 further enhances the sealing and explosion-proof effect. The grounding component 8 conducts static electricity to the ground, further improving the explosion-proof effect. The button protection component 6 allows the user to easily control the control component 5 within the mounting cavity 11 from the cover 2, ensuring the sealing effect.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0039] Although this article uses a lot of terms such as control housing 1, mounting cavity 11, open end 12, control base plate 13, cover 2, base plate fixing assembly 3, mounting post 31, fixing screw 32, control positioning assembly 4, placement groove 41, control assembly 5, explosion-proof indicator light 51, control button 52, control switch 53, control base 54, button protection assembly 6, signal light housing 61, button housing 62, switch housing 63, button mounting hole 64, explosion-proof access device 7, access hole 71, hollow screw 72, sealing ring 73, access nut 74, sealing ring 75, plug rod 76, grounding assembly 8, grounding bolt 81, grounding nut 82, plug-in assembly 9, snap ring 91, snap protrusion 92, snap groove 93, fixing assembly 10, fixing hole 101, positioning hole 102, fixing bolt 103, etc., the possibility of using other terms cannot be ruled out. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would be contrary to the spirit of this utility model.

Claims

1. A structure of an explosion-proof master controller, comprising a control housing (1) having a mounting cavity (11), one side of the control housing (1) having an open end (12) in communication with the mounting cavity (11), and the control housing (1) being provided with a cover (2) capable of closing the open end (12), characterized in that, The installation cavity (11) has a control bottom plate (13), the control bottom plate (13) is fixed on the control shell (1) by the bottom plate fixing assembly (3), and the control bottom plate (13) is provided with a control assembly (5) by the control positioning assembly (4), the cover (2) is provided with a button protection assembly (6) corresponding to the control assembly (5), and the control shell (1) is provided with an explosion-proof access device (7) communicated with the installation cavity (11), and the explosion-proof access device (7) is provided with a grounding assembly (8) in the installation cavity (11).

2. The structure of the explosion-proof master controller according to claim 1, wherein, The explosion-proof access device (7) includes an access hole (71) arranged on one side of the control shell (1), the access hole (71) is provided with a hollow screw (72), the hollow screw (72) is connected with the access hole (71) by thread fixing, and one end of the hollow screw (72) extends into the installation cavity (11), and the access hole (71) is provided with a sealing ring (73) sleeved on the outer side of the hollow screw (72) on both sides.

3. The structure of the explosion-proof master control unit according to claim 2, wherein, The outer side of the hollow screw (72) is provided with an access nut (74) abutting against the sealing ring (73), and the end of the hollow screw (72) away from the access hole (71) is provided with a plug rod (76) capable of closing the hollow screw (72) through a sealing ring (75), or the hollow screw (72) is provided with an explosion-proof cable extending into the installation cavity (11) and connected with the control bottom plate (13).

4. The structure of the explosion-proof master control unit according to claim 2, wherein The grounding assembly (8) includes a grounding bolt (81) arranged in the installation cavity (11), the grounding bolt (81) is arranged on one side of the access hole (71), and the grounding bolt (81) is fixedly connected with the control shell (1) through a grounding nut (82).

5. The modular construction of an explosion-proof master control according to claim 1, characterized in that The bottom plate fixing assembly (3) includes a plurality of mounting columns (31) arranged in the installation cavity (11), the control bottom plate (13) is arranged on the mounting column (31), and the control bottom plate (13) is provided with a plurality of fixing screws (32) connected with the mounting column (31), and the control positioning assembly (4) is arranged on the side of the control bottom plate (13) away from the mounting column (31).

6. The construction of an explosion-proof master controller according to claim 5, characterized in that, The control positioning assembly (4) includes a plurality of placing grooves (41) arranged on the control bottom plate (13), and the adjacent placing grooves (41) are equidistantly arranged, and the control assembly (5) is arranged in the placing groove (41).

7. The construction of an explosion-proof master controller according to claim 6, characterized in that, The control assembly (5) includes an explosion-proof indicator lamp (51), a control button (52) and a control switch (53), the explosion-proof indicator lamp (51) and the control button (52) are arranged in the placing groove (41), and the control switch (53) is arranged in the placing groove (41) through a control base (54).

8. The structure of the explosion-proof master control unit according to claim 7, wherein, The button protection assembly (6) comprises a signal lamp shell (61), a button shell (62) and a switch shell (63), the signal lamp shell (61), the button shell (62) and the switch shell (63) are arranged in the button mounting hole (64) of the cover (2), the signal lamp shell (61) is arranged correspondingly with the explosion-proof indicator light (51), the button shell (62) is arranged correspondingly with the control button (52), and the switch shell (63) is arranged correspondingly with the control switch (53).

9. The structure of the explosion-proof master control unit according to claim 1, wherein, The cover (2) and the control shell (1) are connected by the plug-in assembly (9), the control shell (1) and the cover (2) are made of glass fiber unsaturated polyester resin, the four corners of the cover (2) are fixedly connected with the control shell (1) through the fixing assembly (10), the plug-in assembly (9) comprises a clamping ring (91) arranged on one side of the control shell (1) with an open end (12) and extending inwardly, one side of the clamping ring (91) is provided with a clamping protrusion (92) extending towards the cover (2), the clamping protrusions (92) are arranged at both ends of the control shell (1) respectively, the cover (2) is provided with a clamping groove (93) extending inwardly on one side towards the control shell (1), the clamping groove (93) is arranged correspondingly with the clamping protrusion (92), the clamping protrusion (92) is arranged in the clamping groove (93), and the side of the cover (2) is arranged abuttingly with the clamping ring (91).

10. The modular structure of an explosion-proof master controller according to claim 9, wherein, The fixing assembly (10) comprises fixing holes (101) arranged at four corners of the control shell (1) respectively, the cover (2) is provided with positioning holes (102) arranged correspondingly with the fixing holes (101), the positioning holes (102) are provided with fixing bolts (103) extending in the fixing holes (101) at one end, and the cover (2) and the control shell (1) are fixedly connected through the fixing bolts (103).

Images